2. GIGABYTE GA-6VXC7-4X-P + Celeron 700/Pentium III 800 and the same devices in first config.

OS is Windows 98SE. I have tried DX from 6.1 to 8.1, and tried plenty of voodoo drivers (cleaning the previous versions) official and Amigamerlin 2.9, but the result is the same - massive framedrops (practically slideshow) in NFS: HP and NFS:HS, especially in scenes with lot of transparent smoke and dust and sprite trees. In scenes without smoke framerate is ok. Can it be hardware problem or software? Maybe you can help me to solve that problem*(.